CASEYVILLE, Ill.—The police chief in Caseyville has been placed on paid administrative leave because of a grand jury investigation into his use of a truck seized as part of a drug case.

City officials said Police Chief J.D. Roth did not sell the pickup truck at auction, as directed by state law.

Village records show that Roth instead drove the 2003 Dodge Ram 65,000 miles for personal use and charged the village more than $6,000 for maintenance.

Roth was placed on leave Monday by Mayor George Chance after St. Clair County State’s Attorney Brendan Kelly asked that Roth not be involved in police investigations or have access to evidence or village computer records.

“As set forth in Brendan Kelly’s letter, Chief Roth’s actions in the past have been ‘nothing but appropriate and respectful,’” Chance said in a letter written to the Village of Caseyville Board.